Opening device for liquid or pressure gas bottles



April 7, 1931. 4 1,799,914

R..M. L. LEMOINE, NEE TROUILLET v OPENING DEVICE FOR LIQUID 0R PRESSURE GAS BOTTLES Filed March 5, 1929 o H 7 A a I 18 4 \E & #5 2 INVENTOR:

Rene'e Marie Louise Lemoine, ne e Trouillet By Attorneys,

Patented Apr. 7, 1931 UNITED. STATES PATENT OFFICE um HARE-LOUISE LEHOIN'E, NEE TRO'UILLET, OF PEBBImS-BUB-ANDELLE,

FRANCE DPENING DEVICE FOR LIQUID OB PRESSURE GAS BOTTLES Application fled March 5, 1929, Serial No. 344,365, and in France March 10, 1928.

The present invention has for its object to provide various means to allow of emptylng instantaneously bottles filled with liquid or pressure gas whatever the inner volume of said bottles and the pressure of the liquid or pressure gas contained therein may be.

The principle of the invention consists in uncovering almost instantly the entire section of a suitable orifice, in such a manner that the whole contents may flow out instantaneously without expanding and without freezing.

The discharge may be produced automatically by the action of the contents which is brought about by a catch device operated on the spot or at a distance by electrical, mechanical or other means.

According to the present mode of execution the bottle is provided with a differential pis- 2 ton which frees the catch device in such a manner that the contents acting upon the large piston at one end opens suddenly the valve constituted by the small piston at the other end.

I am aware that acritical outlet orifices for liquid and pressure gases which allow of completel emptying a gas bottle of any capacity and seconds are already known, the gas then coming out in a solid state, with a. constant delivery without freezing or frosting of any kind, the ex ansion taking place outside the container. y acritical 1s meant the minimum value of the. cross-sectional area of the opening which corresponds .to a given gas, and if not observed, will cause the discharge of the gas to take place accompanied by frosting.

The section'of said orifice is determined for every gas by coefiicients which are functions of the volume of the containerand of the time required for the emptying, and may be generally indicated by the formula I cient which is a function of the time t reunder any pressure in 1 to 10 quired for emptying the bottle without the I formation of ice or hoarfrost. The formula has been determined empirically by experiments by using a bottle with a constant content but diiferent orifices. Q

Taking for example carbonic gas CO and supposing a discharge period equal to 6 seconds, the coeflicient is 41.5, and the section in In. m? of the acritical orifice may be the followingi I S 41.5 P being the weight in grams observing the usual conditions of filling, that is, 100 gr. liquefied gas in a 134 cm. container.

According to the present invention, the total section of the acritical orifice calculated in the above manner is cleared in the above said manner.

The invention will advantageously be applied for extinguishers on tank-steamers, coal bunkers, electric-stations, operators cabins in cinemas, etc.-that is, in all places where the rapidity with which the gas must put out the flame is the prime object.

The invention may also be applied to starting apparatus for airships, boats and to starters of all kinds.

' The appended drawings show by way of examples, various modes of execution of my invention. 7

Fig. 1 is a longitudinal sectional view of a bottle provided with a difi'erential piston adapted to open automatically.

Fig. 2 shows the bottle in its open position.

As will be seen in Fig. 1, in the first mode of instantaneous opening, the bottle 1 is provided inside, at the top with a tubular element 2, the bore of which is the same as the acritical section of the considered gas. The

tube 2 is provided with an extended portion 3 of lesser thickness provided with ports 4 and with a sharp edge 5 upon which the packing 6 of valve 7 is supported. The valve is constituted as a very long tubular iston guided in the part 3 and made 1nte ra with a. rod 8 which extends through t e whole length of the bottle. rod 8 is provided with a head 9 movable in The lower'end of the bottle 1.

The tail 12 below the shoulder 14 is screwthreaded in a piston-valve 16 which is guided in the part 15 and is provided with a sharp edged circular flange 17 forming a joint upon a packing 18 embedded in the end of part 15, the latter being externally screwthreaded within a sleeve 19 which is split diametrically at 20. In the opening thus formed there is arranged a lever 21 having one end pivoted at 22, and provided at its other end with a nose 23, the middle of said lever being provided with a boss 24. The nose may be supported upon a rod 25 which passes through both cheeks in the corresponding opening and is rotated by means of a small lever 26.

In the position where the nose 23 engages the rod 25' (Fig. 1) the boss 24 presses the piston-valve 16-17 against its seat and at the other end of the bottle when it is full, the internal pressure also presses the small piston-valve 6-7 against its seat.

The mode of operation for emptying the bottle is as follows:

The lever 26is actuated in such a manner as to free the nose 23 and allow the swinging of part 21. The inner pressure acting preponderently upon the large piston 16 presses it back downwards until the head 12 engages the packing 13 thus preventing any escape at the bottom. In this movement the valve 6-7 opens and uncovers also the ports 4 in such a way that the entire section of the acritical opening is free and the gas is instantaneously expelled.

It will be understood that I do not limit myself to the particular arrangement hereinbefore specifically described inasmuch as many modifications may be made in the construction and arrangement of said parts without departing from the principle of my invention. I I

What I claim and desire to secure by Letters Patent of the United States is:

1. In a bottle for liquid or pressure gas an outlet orifice, a valve opening to the inside to obturate said orifice, a tubular element at the end opposite to said orifice, a valve opening outwards designed to close said tubular part, the second valve having a larger sec tion than the first a connection between both valves and a latch for said second valve actuated from the outside- 2. In a bottle for liquid or pressure gas, an outlet orifice, a valve openin to the inside designed to obturate said or' ce, a second orifice having a larger section than the first at the end of the bottle opposite that where the first orifice is situated, a second valve opening towards the exterior for closing the second orifice, means to connect both valves together a latch designed to lock the second valve when at rest, and means for guiding both valves.

3. In a liquid or pressure gas bottle, an

outlet orifice, a valve opening to the inside for obturating same, a second orifice of larger section than the first at the end of the.

bottle opposite the one where the first orifice is situated, a second valve opening towards the exterior in parallel with the first designed to close said second orifice, means to slidingly connect the valves together and means integral with the first to prevent the access of the gas to the second valve when both valves are open, and a latch to normally lock the second valve.

4. In a liquid or pressure gas bottle, a tubular element at one end, a shoulder insame, ports in the wall beneath said shoulder, a valve pressed against said shoulder by the pressure of the gas, said valve having a cylindrical body guided in said tubular element, a tubular element at the opposite end of the bottle having a larger section than the first, a valve pressed from the outside upon the opening of said tubular element, a cap secured on said element, a latch in, said cap for keeping the valve seated and for releasing it, a rod for said valve extending inside, a hollow head at the end of said rod, a rod extending inside for the first valve, a head at the end of said rod located in a recess formed in the head ofthe second valve rod, and a nut to lock said head and retain the head of the first valve rod, a free space being left between said head and the stopper on the one part and between said head and the bottom of the recess on the other part, a shoulder in the tubular element, a packing on said shoulder, the shoulder and the packing being perforated to allow the passage of the second valve rod and stop the head of said red, the packing being placed on the head side.

In witness whereof, I have hereunto signed my name.

RENEE MARIE-LOUISE LEMOINE, nie TROUILLET. 

